Q: You're a coder who's reviewing the record of a 62-year-old woman who was admitted to the hospital
with shortness of breath and minor chest pain. The doctor diagnosed the patient with

Staphylococcus
aureus pneumonia and you assigned a code of 482.41. Additionally, you coded decompensated chronic
systolic congestive heart failure (as documented by the physician) as 428.22 and 428.0. The coding system
grouped the information into MS-DRG 178 (RW: 1.4860). The hospital has a base rate of $4,500.
Which of the following is the principal diagnosis?
A. 178
B. 428.0
C. 428.22
D. 482.41

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